On Thursday, May 14, 2015 at 1:46, Paul Birkel wrote:
What do they recommend on the receiver-end?
LSTTL with a 4.7K pulldown to -2V on the input.
Is the "HP 1000 M/E/F-Series Computers I/O
Interfacing Guide"
(02109-90006 September 1980) available online somewhere?
I thought I had sent it to Al some years ago, but it's not listed. In any
case, I've posted it here:
http://home.earthlink.net/~jdbryan/dropbox/02109-90006_Sep-1980.7z
See chapter 5, pages 5-5 and 5-6.
-- Dave